Girder.



PATENTED NOV. 14, 1905.

E. HANGOX.

GIRDER.

APPLICATION FILED PEB.13.1905.

lU'I SAES PATENT GERBER.

Specification of Letters Patent.

Patented Nov. 14, 1905.

Application filed February 13, 1905. Serial No. 245,438.

To wZZ whom it may concern:

Be it known that I, EDWIN IIANCOX, a subject of the King of GreatBritain, residing at Stockton-om'lees, England, have invented certainnew and useful Improvements in Girders, of which the following is aspecification, such as will enable those skilled in the art to which itappertains to make and use the same.

This invention relates to girders for use in the construction ofbuildings and other structures and the object thereof is to provide animproved girder for this purpose which is composed of separate partsconnected with or without the use of metal rivets, a further objectbeing to provide a girder of the class specified which is simple inconstruction and comparatively inexpensive and which possesses a maximumof strength while involving a minimum of weight; and with these andother objects in view the invention consists of a device of the classspecified constructed as hereinafter described and claimed.

T he invention is fully disclosed in the following specification, ofwhich the accomp any ing drawings form a part, in which the separateparts of my improvement are designated by suitable reference charactersin each of the views, and in which-- Figure 1 is a side view of a girdermade according to my invention and having a double web; Fig. 2, alongitudinal section on the line a r of Fig. 1; Fig. 3, a transversesection on the line y y of Fig. I; Fig. 4, a side View of astifferlii'lg bar or brace which I employ Fig.

5, an end view of the bar or brace shown in Fig. 1; Fig. 6, a section onthe line 2 2 of Fig. l, and Figs. 7 and 8 different side views of alock-block which I may employ.

In the practice of my invention as shown in the drawings I provide agirder which comprises top and bottom plates A, which are similar inform and the adjacent surfaces of which are provided with longitudinalraised portions or ribs A, in which are formed longitudinal grooves A",and the opposite edges of the plates A are thickened, as shown at A,this construction being clearly shown in Fig. 3.

In the accompanying drawings I have shown a girder provided with twowebs, and these Webs are made of separate plates or sections B,connected at regular intervals by vertically or transversely arrangedstiffening bars or braces C, which are T-shaped in crossseetion, and thecross-head portions of which are provided with. grooves C adapted toreceive the ends of the plates or sections B, and the ends of saidplates or sections B and the top and bottom edges thereof are thickened,as shown at B and the thickened end portions of said. plates or sectionsare inserted into the grooves C While the thickened top and bottom edgesthereof are inserted into the grooves A in the longitudinally-thickenedmembers or ribs A 011 the adjacent surface of the top and bottom platesA.

When the parts A, B, and C are connected in the manner shown anddescribed, the side walls of the grooves A are compressed 011 the topand bottom edges of theplates or sections B and the side walls of thegrooves C in the cross-section portions of the bars or the braces C arecompressed on the ends of the plates or sections B, and this securelylocks the separate parts of the girder together.

The separate plates or sections B of the webs and the transversely orvertically arranged braces or bars C may first be connected, if desired,and the said webs may then be secured in position between. the top andbottom plates A of the girder.

It will be observed that the end braces or bars C are lL-shaped insteadof T-shaped in cross-section, and in the drawings forming part of thisspecification I have shown two different forms of locking devices whichmay be employed. One of these forms of locking devices consists ofirregular blocks I), having grooves D and D in two of their faces, andin practice these blocks are connected with the top and bottom plates Aand with the Web portions of the brace or bars C, the edges of the topand bottom plates A and the web portions of the braces or bars C beinginserted into the grooves D and D the walls of which are compressedthereon, and when used in this manner the blocks C form additional locksfor securing the separate parts of the girder together and for renderingthe same more strong and substantial. l.

have also shown in the accompanying drawings lL-shaped brackets E, whichare placed at the end corners of a girder and which may be used inconnection with the locking blocks or devices D or independently thereofand which are riveted to the top and bottom plates A and to the bracesor bars 0 at the ends of the girder.

The locking devices D and E may both be employed or either may beemployed independent of the other, and in this way I provide a strongand substantial girder which may be used in any kind or class ofstructures where girders of this shape are usually employed.

Although I have shown and described a girder provided with two webs, itwill be apparent that my improvements may be employed in theconstruction of girders having a single web, and other changes in andmodifications of the construction herein described may be made withoutdeparting from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A girder composed of top and bottom plates connected by avertically-arranged web, said plates being provided on their adj acentsurfaces with longitudinally-arranged portions or ribs having grooves,and said web being composed of separate sections or members insertedinto the said grooves and secured therein, and the separate members orsections of said web being connected by transversely-arranged braceshaving grooves in their opposite sides and in which the ends of themembers or sections of the web are secured, substantially as shown anddescribed.

2. A girder composed of top and bottom plates connected by avertically-arranged web, said plates being provided on their adjacentsurfaces with longitudinally-arranged portions or ribs having grooves,and said web being composed of separate sections or members insertedinto the said grooves and secured therein, and the separate members orsections of said web being connected by transversely-arranged braceshaving grooves in their opposite sides and in which the ends of themembers or sections of the web aresecured, the braces or bars at theends thereof being also connected with the edges of the top and bottomplates by means of lockingblocks having moves in two sides thereof intowhich sai edges are inserted and secured, substantially as shown anddescribed.

3. A girder composed of top and bottom plates connected by a verticallyarranged web, said plates being provided on their ad jacent surfaceswith longitudinal]y-arranged portions or ribs having grooves, and saidweb being composed of separate sections or members inserted into thesaid grooves and secured therein, and the separate members or sectionsof said web being connected by transversely-arranged braces havinggrooves in their opposite sides and in which the ends of the members orsections of the web are secured, and locking devices for securing thebraces or bars and the top and bottom plates together, substantially asshown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 25th day ofJanuary, 1905.

EDY IN HANCOX.

itnesses:

JOHN SToRRow SHORT, THOMAS HENRY CARR.

